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Gobiodon okinawae, commonly known as the Okinawa Goby or Yellow Coral Goby, is a small, vibrant marine fish belonging to the family Gobiidae. It is characterized by its striking uniform yellow coloration and a distinctive, somewhat compressed body shape. These gobies are obligate symbionts with branching corals, primarily Acropora species, where they reside for shelter and protection.
Ciri Fisik
- Bentuk tubuh
- compressed
- Warna
- Uniform, bright yellow to golden-yellow across the entire body, including fins. Some individuals may exhibit very faint, almost imperceptible, darker vertical banding under certain conditions or stress, but this is not a prominent feature.
- Jenis sisik
- ctenoid
- Posisi mulut
- superior
- Ciri khas
- Small, compact body, Large, upward-pointing eyes, Thick, fleshy lips, Absence of scales on the head and nape, Fused pelvic fins forming a suction cup-like disc
- Sirip punggung
- Two dorsal fins; the first dorsal fin has 6 spines, and the second dorsal fin has 1 spine and 9-11 soft rays. The first dorsal fin is typically lower than the second.
- Sirip ekor
- Rounded caudal fin.
- Sirip dada
- Pectoral fins are relatively large and rounded, with 17-19 rays.
- Sirip khas
- Pelvic fins are fused into a disc-like structure, characteristic of gobies, used for clinging to coral branches.
Tips Identifikasi
Coloration
Its uniform, bright yellow color is the most distinguishing feature, setting it apart from most other gobies.
Body Shape
The compressed, somewhat stout body and large head are characteristic.
Habitat Association
Always found nestled within the branches of live branching corals, particularly Acropora.
Size
Small adult size, typically not exceeding 4.5 cm (1.8 inches) in total length.
Habitat
- Jenis air
- saltwater
- Kedalaman
- Typically found in shallow reef environments, from 1 to 20 meters (3 to 65 feet).
- Lingkungan
- Coral reefs, specifically within the branches of live branching corals, predominantly Acropora species. They are obligate coral dwellers.
- Sebaran geografis
- Indo-Pacific region, including the Ryukyu Islands (Okinawa), Taiwan, Philippines, Indonesia, Papua New Guinea, and parts of the Great Barrier Reef.
Informasi Akuarium
- Tingkat perawatan: intermediate
- Temperamen: peaceful
- Pola makan: carnivore
- Ukuran akuarium minimum: 10 gallons
- Suhu: 72-78°F (22-26°C)
- Tingkat pH: 8.1-8.4
- Kesadahan: 8-12 dKH
- Kompatibilitas: Generally peaceful with other small, non-aggressive fish. Can be territorial towards conspecifics or other gobies in smaller tanks. Best kept singly or in a proven pair.
- Kebutuhan khusus: Requires live branching coral (preferably Acropora spp.) for shelter and to exhibit natural behaviors. Good water quality and stable parameters are crucial. Provide plenty of hiding spots within the coral structure.
Informasi di Alam Liar
- Status konservasi: least concern
- Musim: Breeding occurs year-round in tropical waters, with peak activity often influenced by lunar cycles.
- Harga pasar: Varies, typically $15-$30 USD
- Nilai ekonomis: medium
- Rasa: Not typically consumed due to small size.
- Tekstur: Not typically consumed due to small size.
- Nilai gizi: Not typically consumed due to small size.
Fakta kunci
Coral Symbiontbehavior
Gobiodon okinawae forms an obligate symbiotic relationship with branching corals, primarily Acropora species, using the coral for shelter, protection, and sometimes as a spawning site.
Toxic Mucusbehavior
These gobies secrete a bitter, toxic mucus from their skin when stressed, which deters predators. This is a key defense mechanism.
Hermaphroditismevolution
Gobiodon okinawae is a protogynous hermaphrodite, meaning individuals can change sex from female to male. This allows for flexible pairing strategies within their coral hosts.
Parental Carebehavior
Both parents typically guard the eggs, which are laid within the coral branches, until they hatch.
Smallest of its Kindrecord
It is one of the smallest species within the Gobiodon genus, rarely exceeding 4.5 cm in length.
Informasi keamanan
Tangani dengan hati-hati- Tingkat keamanan: caution
- Berbisa: Ya
- Kelayakan konsumsi: not recommended
- Catatan penanganan: Gobiodon okinawae, like other members of the genus Gobiodon, possesses a mild venom in its skin mucus. This mucus is secreted when the fish is stressed or handled. While not dangerous to humans, it can be irritating to other fish in a confined space and has a bitter taste, serving as a deterrent to predators. Handle with care to minimize stress and avoid direct contact with the mucus if possible. Wash hands after handling.
Spesies serupa
Green Clown Goby
Gobiodon atrangulatus
Primarily green coloration, often with dark markings or bands. While also a coral goby, its color is distinct from the bright yellow of G. okinawae.
Redhead Goby
Gobiodon histrio
Typically has a reddish-orange head and anterior body, transitioning to a yellowish or greenish posterior. May have faint vertical bars. Not uniformly yellow.
Black-lined Coral Goby
Gobiodon rivulatus
Variable coloration (green, yellow, brown) but always features distinct dark vertical lines or spots on the body and head, which G. okinawae lacks.
Klasifikasi ilmiah
- Kerajaan
- Animalia
- Filum
- Chordata
- Kelas
- Actinopterygii
- Ordo
- Gobiiformes
- Famili
- Gobiidae
- Genus
- Gobiodon
- Spesies
- okinawae
Jelajahi Okinawa Goby
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